#!/usr/bin/env ruby

# Require app
require 'templater'
  
MIDDLEMAN_BUILDER = true
require 'middleman'
require 'rack-test'

module Generators
  extend Templater::Manifold
  desc "Build a staticmatic site"

  class Builder < Templater::Generator
    # Define source and desintation
    def self.source_root; Dir.pwd; end
    def destination_root; File.join(Dir.pwd, 'build'); end

    # Override template to ask middleman for the correct extension to output
    def self.template(name, *args, &block)
      return if args.first.include?('layout')
      args.first.split('/').each do |part|
        return if part[0,1] == '_'
      end
      
      if (args[0] === args[1])
        file_name_parts = File.basename(args.first).split('.')
        
        if file_name_parts.length > 2
          # static ext embedded in filename
          newext = ""
        else
          # use defaults
          newext = case file_name_parts.last
          when 'haml', 'erb', 'mab', 'maruku'
            '.html'
          when 'sass'
            '.css'
          end
        end
        
        args[1] = args[0].gsub(".#{file_name_parts.last}", newext).gsub('views/', '')
      end
      
      super(name, *args, &block)
    end

    def self.file(name, *args, &block)
      args[1] = args[0].gsub('views/', '') if (args[0] === args[1])
      super(name, *args, &block)
    end

    public_files_glob = File.join(source_root, "public", '**/*')
    Dir[public_files_glob].each do |action|
      next if File.directory?(action)
      action = action.sub("#{source_root}/", '')
      template_sym = action.downcase.gsub(/[^a-z0-9]+/, '_').to_sym
      
      if File.extname(action) == '.js' && !action.include?('min')
        template(template_sym, action, action.gsub('public/', ''))
      else
        file(template_sym, action, action.gsub('public/', ''))
      end
    end

    glob! "views", (Middleman.supported_formats << "sass")
  end

  add :build, Builder
end

class BuildConfig
  def self.render(source, destination)
    renderer.render(source, destination)
  end
  
  def self.renderer
    @@renderer ||= BuildRenderer
  end
  
  def self.renderer=(val)
    @@renderer = val
  end
end

# Monkey-patch to use a dynamic renderer
class Templater::Actions::Template
  def render
    BuildConfig.render(source, destination)
  end
end

# Default render through middleman
class BuildRenderer
  def self.render(source, destination)
    request_path = destination.gsub(File.join(Dir.pwd, 'build'), "")
    browser = Rack::Test::Session.new(Rack::MockSession.new(Middleman))
    browser.get(request_path)
    browser.last_response.body
  end
end

class SprocketsRenderer < BuildRenderer
  def self.render(source, destination)
    if File.extname(source) == '.js'
      secretary = Sprockets::Secretary.new( :asset_root   => "public",
                                          :load_path    => ["public/assets/javascripts/**/*.js"],
                                          :source_files => [source] )
      compressor = YUI::JavaScriptCompressor.new(:munge => true)
      compressor.compress(secretary.concatenation.to_s)
    else
      super
    end
  end
end
BuildConfig.renderer = SprocketsRenderer

Generators.run_cli(Dir.pwd, 'mm-build', 1,  %w(build --force).concat(ARGV))